ENOfficial
Abu Dharr reported God’s messenger as saying, “The most excellent action is love for God’s sake and hatred for God’s sake.” Abu Dawud transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي ذَرٍّ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَفْضَلُ الْأَعْمَالِ الْحُبُّ فِي اللَّهِ وَالْبُغْضُ فِي اللَّهِ» . رَوَاهُ أَبُو دَاوُد
sunnah.com